The average waiting time to be seated for dinner at a popular restaurant is 23.5 minutes, with a standard deviation of 3.6 minutes. Assume wait time is normally distributed.
1. When a patron arrives at the restaurant for dinner. find the probability that the patron will have to wait less than 18 minutes or more than 25 minutes.
2. When a patron arrives at the restaurant for dinner. find the probability that the patron will have to wait between 15 and 22 minutes.
